title: Effects of nystatin, fluconazole and propolis on poly(methyl methacrylate) resin surface.
abstract: The prevalence of candidosis in denture wearers is as well established as its treatment with antifungal agents (AAs). However, little research has been done regarding the effects of AAs on denture base surfaces. Therefore, the aim of this study was to evaluate the effects of fluconazole (FLU), nystatin (NYS) and propolis orabase gel (PRO) on poly (methyl-methacrylate) (PMMA) surfaces. Deionized water and orabase gel without any active component were used as control groups. Conventional heat-polymerized (Clássico) and microwave-polymerized (Onda Cryl) acrylic resins were used. After polymerization, the specimens were polished and had their surfaces evaluated for roughness, free energy and Knoop hardness. Subsequently, specimens were immersed in AAs and controls for 14 days at 35+/-2 degrees C and all variables were measured again. Data were analyzed statistically by 2-way ANOVA followed by Tukey's test (alpha=0.05). Roughness results showed similar behavior for both PMMA resins, with PRO reaching the highest values and differing significantly from the other AAs (p<0.05). No statistically significant differences (p>0.05) were found between the two PMMA resins or between NYS and FLU as regards surface free energy. In conclusion, PRO was able to induce changes in PMMA surface properties, such as roughness, which could be related to microbial adhesion.
authors.affiliation: Department of Prosthodontic and Periodontology, Dental School of Piracicaba, State University of Campinas, Piracicaba, SP, Brazil.
authors.forename: Wander José
authors.initials: WJ
authors.lastname: da Silva
authors.forename: Rodrigo Nunes
authors.initials: RN
authors.lastname: Rached
authors.forename: Pedro Luis
authors.initials: PL
authors.lastname: Rosalen
authors.forename: Altair Antoninha
authors.initials: AA
authors.lastname: Del bel Cury
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry; D000890:Anti-Infective Agents / Q000737:chemistry*; D000935:Antifungal Agents / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing; D015725:Fluconazole / Q000737:chemistry*; D006244:Hardness; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D008872:Microwaves; D009761:Nystatin / Q000737:chemistry*; D014677:Pharmaceutical Vehicles; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011429:Propolis / Q000737:chemistry*; D013499:Surface Properties; D013500:Surface Tension; D013997:Time Factors; D014099:Toothbrushing; D014100:Toothpastes / Q000737:chemistry; D014867:Water / Q000737:chemistry; D017155:Wettability
chemical_list: D000180:Acrylic Resins; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D003764:Dental Materials; D014677:Pharmaceutical Vehicles; D014100:Toothpastes; D014867:Water; D009761:Nystatin; D015725:Fluconazole; D011429:Propolis; D019904:Polymethyl Methacrylate